Difference between revisions of "Otodectes cynotis"

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| Also known as:
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| ''The ear mite''
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[[File:Otodectes cynotis.jpg|thumb|200px|right|Otodectes cynotis (Courtesy of C. Antonczyk)]]
 
[[File:Otodectes cynotis.jpg|thumb|200px|right|Otodectes cynotis (Courtesy of C. Antonczyk)]]
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==Identification==
 
==Identification==
  
The mites have closed keratinous bars ('''apodemes''') on their ventral surface. They are smaller in size than [[psoroptes cuniculi]]
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The mites have closed keratinous bars, '''apodemes''' on their ventral surface. They are smaller in size than [[psoroptes cuniculi]]
  
 
*Life cycle takes '''3 weeks'''
 
*Life cycle takes '''3 weeks'''

Revision as of 07:01, 11 July 2010



Also known as: The ear mite
Otodectes cynotis (Courtesy of C. Antonczyk)

Otodectes cynotis mites are surface mites. They are the cause of otodectic skin infestation, the most common mange of dogs and cats in the world. They are also found in the fox and the ferret. The mites inhabit the inner ear and feed on ear debris.

Identification

The mites have closed keratinous bars, apodemes on their ventral surface. They are smaller in size than psoroptes cuniculi

  • Life cycle takes 3 weeks


Pathogenesis

  • The majority of cats harbour the mites, however only a few show symptoms
    • Transmission occurs whilst kittens are suckling
  • Brown waxy exudate produced
  • Can lead to secondary infection
  • Clinical signs are apparent
    • Head shaking
    • Ear scratching
    • Aural haematomata


Treatment

  • Acaracidal ear drops
    • Massage base of ear to disperse drops after treatment
  • Most treatments need to be repeated in 10-14 days to kill newly hatched mites
  • Selamectin can be used as a spot-on treatment
    • Prolonged duration of action
  • Treat all in-contact animals
    • These may be asymptomatic carriers